BIOLOGY
12th Edition
ISBN: 9781260169614
Author: Raven
Publisher: RENT MCG
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Chapter 7, Problem 5U
What is the role of NAD+ in the process of
a. It functions as an electron carrier.
b. It functions as an enzyme.
c. It is the final electron acceptor for anaerobic respiration.
d. It is a
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What is the role of NAD+ in the process of cellular respiration?
a. It functions as an electron carrier.
b. It functions as an enzyme.
c. It is the final electron acceptor for anaerobic respiration.
d. It is a nucleotide source for the synthesis of ATP.
During glycolysis, pyruvate oxidation, and the citric acid cycle, NADH is produced. The citric acid cycle also produces FADH2. What is the purpose of these molecules?
a. to produce carbon dioxide to breathe out
b. to produce oxygen that is needed for the electron transport chain
c. to carry electrons to the electron transport chain
d. to provide the ADP and phosphate that are needed to make ATP
How is the energy used to make ATP via the electron transport chain generated?
a. The energy from electrons bound to reduced coenzymes is used to create a steep electrochemical gradient.
b. Electrons bound to NADH are used to generate a H+ ion gradient across the inner mitochondrial membrane.
c. Electrons bound to FADH2 are used to generate a proton gradient across the inner mitochondrial membrane.
d. Electrons bound to NADH are used to generate a proton gradient across the inner mitochondrial membrane.
e. All of these are correct.
Chapter 7 Solutions
BIOLOGY
Ch. 7.1 - Prob. 1LOCh. 7.1 - Explain the role of electron carriers in energy...Ch. 7.1 - Prob. 3LOCh. 7.2 - Prob. 1LOCh. 7.2 - Calculate the energy yield from glycolysis.Ch. 7.2 - Distinguish between aerobic respiration and...Ch. 7.3 - Prob. 1LOCh. 7.4 - Relate the nine reactions of the citric acid cycle...Ch. 7.4 - Diagram the oxidation reactions in the citric acid...Ch. 7.5 - Prob. 1LO
Ch. 7.5 - Prob. 2LOCh. 7.6 - Calculate the number of ATP molecules produced by...Ch. 7.7 - Prob. 1LOCh. 7.8 - Prob. 1LOCh. 7.8 - Distinguish between fermentation and anaerobic...Ch. 7.9 - Identify the entry points for proteins and fats in...Ch. 7.9 - Prob. 2LOCh. 7.10 - Prob. 1LOCh. 7 - Prob. 1DACh. 7 - Prob. 1UCh. 7 - Prob. 2UCh. 7 - Which of the following is NOT a product of...Ch. 7 - Glycolysis produces ATP by a. phosphorylating...Ch. 7 - What is the role of NAD+ in the process of...Ch. 7 - Prob. 6UCh. 7 - The electrons carried by NADH and FADH2 can be a....Ch. 7 - Prob. 1ACh. 7 - Prob. 2ACh. 7 - Prob. 3ACh. 7 - What is the importance of fermentation to cellular...Ch. 7 - Prob. 5ACh. 7 - A chemical agent that makes holes in the inner...Ch. 7 - Prob. 7ACh. 7 - Use the following table to outline the...Ch. 7 - Human babies and hibernating or cold-adapted...Ch. 7 - Recent data indicate a link between colder...
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- What happens during glycolysis, the first stage of cellular respiration? A. Glucose is broken down gradually via several enzyme-controlled steps. B. All of these C. A small amount of ATP is produced D. NADH, an electron carrier is produced E. Glucose is split to form two molecules of pyruvatearrow_forwardWhy is the formation of ATP by ATP synthase referred to as oxidative phosphorylation? A. A phosphate is transferred from oxygen to ADP to form ATP B. Oxygen provides the mechanical energy that is used to create ATP from ADP C. Oxygen is the final electron acceptor in the electron transport chain, which creates the proton gradient necessary to power ATP synthase D. ADP combines with oxygen to form ATParrow_forwardWhy is oxygen important in aerobic cellular respiration? a. Without oxygen, the Citric acid cycle will be disrupted b. Oxygen is the final electron acceptor during the electron transport chain c. they produce carbon dioxide and water d. It provides electrons during cellular respirationarrow_forward
- How will the cell shift its metabolic processes in response to the level of pyruvate and in order to produce ATP? A. It will shift from aerobic respiration to fermentation B. It will shift from aerobic respiration to anaerobic respiration C.It will continue with aerobic metabolism using oxygen in the cytosol to make ATP D. It will shift from anaerobic respiration to fermentationarrow_forwardWhat are NADH and FADH2? a. Oxidized coenzymes which carry electrons b. energy-producing organelles c. short-term, socially popular sources of hydrogen gas d. Reduced coenzymes which carry electronsarrow_forwardWhat fundamental difference sets apart anaerobic respiration from aerobic respiration? a. Anaerobic respiration does not have Krebs Cycle. b. Anaerobic respiration does not have an electron transport chain. c. Anaerobic respiration involves substrate-level phosphorylation only. d. Anaerobic respiration utilizes electronegative compounds such as nitrates as final electron acceptor.arrow_forward
- What specific reaction cannot occur due to the presence of cyanide? A.Transfer of electrons to co-enzymes B.Inability to strip a carbon from pyruvate C.Transfer of electrons to and between carrier proteins D.Addition of a phosphate onto ADP to make ATParrow_forwardWhat happens at the end of the electron transport chain of cellular respiration? A. 4 electrons combine with oxygen (O2) and protons. B. 4 electrons combine with oxygen atom (O) and water. C. The 2 original electrons combine with oxygen (O2). D. The 2 original electrons combine with NAD+. E. 1 electron combines with oxygen (O2) and hydrogen. F. 1 electron combines with oxygen (O2).arrow_forwardWhich stage of cellular respiration DOES NOT produce NADH? A. oxidative phosphorylation B. pyruvate oxidation C. glycolysis D. Krebs cyclearrow_forward
- what is the transmembrane protein responsible for ATP synthesis during both photosynthesis and cellular respiration? a. Na+/K+ ATPase b. SGLUT-1 c. ATP synthase d. carbonic anhydrase e. rubiscoarrow_forwardIn the citric acid cycle, isocitrate is oxidatively decarboxylated by the enzyme isocitrate dehydrogenase to yield? a. Alpha-ketoglutarate, CO2 and NAD+ O b. Alpha-ketoglutarate, CO2 and GTP O c. Alpha-ketoglutarate and CO2 O d. Alpha-ketoglutarate, CO2 and NADHarrow_forwardWhich statement about the ATP synthase is false? a. It is a rotary machine b. It is located in the inner mitochondrial membrane c. It can make ATP, or it can break ATP down d. It only contains membrane-embedded regionsarrow_forward
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